EP2769453A2 - Low dc voltage supply for electronic communication devices - Google Patents
Low dc voltage supply for electronic communication devicesInfo
- Publication number
- EP2769453A2 EP2769453A2 EP12773056.2A EP12773056A EP2769453A2 EP 2769453 A2 EP2769453 A2 EP 2769453A2 EP 12773056 A EP12773056 A EP 12773056A EP 2769453 A2 EP2769453 A2 EP 2769453A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- low
- voltage value
- electronic communication
- communication device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims abstract description 40
- 239000003990 capacitor Substances 0.000 claims abstract description 43
- 230000008878 coupling Effects 0.000 claims abstract description 39
- 238000010168 coupling process Methods 0.000 claims abstract description 39
- 238000005859 coupling reaction Methods 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 7
- 230000009466 transformation Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/06—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
- H02M5/08—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/547—Systems for power line communications via DC power distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
Definitions
- the present invention generally relates to the continuous low-voltage supply of electronic communication devices that can be used in a medium-voltage portion of an in-line carrier communication system.
- a non-limiting field of application of the invention relates to remote energy meter reading systems, in particular electricity meters.
- Some electricity suppliers such as the French company ERDF, are currently deploying systems using the power lines of the electricity distribution network to allow communication, preferably bidirectional, of data between installed electricity meters. Users and hubs that collect data from a set of counters.
- FIG. 1 schematically gives the configuration of such a system, indicating in the upper part of the figure the communication layer of the system facing the physical layer of a power distribution network: an electric meter 1 situated at the Home 2 of a user exchanges data with a concentrator 3 using the low voltage power lines 4 (typically between 220 and 400 volts) of the electrical distribution network.
- CPL In-Line Carrier Current
- the concentrator 3 receives the data from different counters 1, it decodes them by means of a suitable PLC modem, and processes them for retransmission to a central server 5 of the energy distributor by any appropriate WAN extended communications network 5a.
- additional equipment may be added at the medium voltage portion of the electricity distribution network.
- the CPL signal weakens with the distance, it may be necessary to regenerate it when the concentrator is too far away. To do this, as shown in Figure 2, it may be necessary to add one or more repeaters 6 to regenerate the CPL signal as many times as necessary to the concentrator 3.
- FIG. 3 schematically illustrates a possible known embodiment for the coupler 9, in association with a concentrator 3.
- the coupler 9 essentially comprises a coupling capacitor 10 and an isolation transformer 11 arranged in such a way that:
- the coupling capacitor 10 is electrically connected firstly with the medium voltage line 8, and secondly, in series with the isolation transformer 11;
- the secondary of the isolation transformer 11 is connected to the concentrator 3.
- a compensation module 10 ' is interposed in series between the coupling capacitor 10 and the primary of the isolation transformer 11 to make it possible to adapt the filtering, and in particular to obtain a low attenuation in the bandwidth of the signal CPL.
- All the aforementioned electronic equipment comprises active components (microprocessors, amplifiers, etc.) that must be powered by one or more DC voltage values, typically of the order of 3.3 volts or 12 volts.
- the concentrator 3 is generally located at a medium voltage / low voltage electrical transformer station 7 of the electrical distribution network, which allows to derive the voltage necessary for the supply from the low voltage lines of the electrical network.
- the object of the present invention is to propose a simple, inexpensive and compact solution to the problem of the continuous low-voltage supply of electronic communication devices able to be coupled to a medium-voltage line of the electrical distribution network.
- the subject of the invention is a method for the continuous low-voltage supply of at least one electronic communication device in an on-line carrier communication system further comprising an on-line carrier coupler for a coupling to a medium-voltage line of an electrical distribution network, characterized in that, the in-line carrier current coupler comprising a coupling capacitor electrically connected to said medium-voltage line, the method comprises a step of generating a first DC low voltage value from a current-voltage conversion of the leakage current relative to said coupling capacitor, said first DC low voltage value being adapted to supply power to at least one active electronic component of said at least one electronic communication device.
- the present invention also relates to a continuous low-voltage supply system for at least one electronic communication device in an in-line carrier communication system further comprising an on-line carrier coupler for coupling to a medium voltage line of an electrical distribution network, characterized in that said in-line carrier current coupler comprises an electrically connected coupling capacitor, and in that the system comprises means for generating a first continuous low voltage value from a current-voltage conversion of the relative leakage current said coupling capacitor, said first low-voltage value being able to supply power to at least one active electronic component of said at least one electronic communication device.
- the generating means may comprise at least one conversion unit comprising a capacitor connected in series with the coupling capacitor and transforming means receiving as input the voltage across said capacitor and delivering said first low-DC voltage value;
- the generation means advantageously comprise an integer n greater than 1 of conversion units interconnected so that the capacitors of each conversion unit are connected in series with the coupling capacitor, each of said units delivering one nth of said first continuous low voltage value;
- the system may further comprise a DC voltage step down means receiving at input said first DC low voltage value and delivering a second DC low voltage value lower than the first DC voltage value.
- This DC voltage step down means can be integrated in said generation means;
- the in-line carrier coupler and the generating means, or even the electronic communication device can advantageously be integrated in the same equipment;
- the equipment is then adapted to be installed on a medium voltage electrical pole of the distribution network;
- the electronic communication device may be a concentrator, a repeater, or a PLC / radio frequency bridge of a remote metering system or electrical distribution network monitoring system.
- the invention in its different aspects will be better understood in view of the following nonlimiting description of a system suitable for remote reading of electricity meters, made with reference to the appended figures, in which: FIG. 1, already described, schematically illustrates the architecture of a television system relying on electric meters using the electrical energy distribution network;
- FIG. 2 already described schematically illustrates a known implementation of the system of FIG. 1;
- FIG. 3 already described represents a known in-line carrier current coupler capable of coupling an electronic device with a medium voltage line of the distribution network;
- FIG. 4 schematically shows a power system according to a first possible embodiment according to the present invention
- FIG. 5 schematically shows a power system according to a second possible embodiment according to the present invention.
- FIG. 6 illustrates an equipment according to the invention integrating the coupler and the repeater or the concentrator.
- the present invention is based on the observation that the in-line carrier coupler used for coupling between the medium voltage line of the electrical distribution network and any electronic communication device such as a concentrator, a repeater, or the like, has a current leakage, known as the Anglo-Saxon leakage current.
- This leakage current is very low, of the order of a few milliamps for a coupling capacitor of 1.5 nanofarads, and is generally considered as a parasitic current.
- the present invention consists in using this leakage current to generate the DC voltage values necessary for supplying the active components of the electronic communication devices coupled to the medium-voltage line through this coupling capacitor.
- the method according to the invention comprises a step of generating a first DC low voltage value from a current-voltage conversion of the leakage current relative to the coupling capacitor, said first DC low voltage value being suitable. to serve as food to at least one active electronic component of at least one electronic communication device coupled to the medium voltage line of the power distribution network.
- FIG. 4 diagrammatically illustrates a feed system 100 implementing the method according to a first possible embodiment of the invention.
- the elements already described previously such as the coupling capacitor 10 and the isolation transformer 11, constituting an in-line carrier coupler enabling an electronic communication device such as a concentrator 3 or a repeater to be found. 6 to take and / or inject a CPL signal on a medium voltage electrical line 8 of the electrical distribution network.
- the electronic device 3 or 6 comprises various active components, typically a microcontroller 12, an analog circuit 13 serving as an interface between the microcontroller 12 and the isolation transformer 11 and comprising power amplifiers, and possibly other components such as a radiofrequency communication module 14 or an optical fiber communication module.
- the microcontroller 12 requires a power supply of 3.3 volts, while the power amplifiers of the analog circuit 13 require a power supply of 12 volts.
- some active components of the module 14 may require a power supply of 3.3 volts, others a power supply of 12 volts.
- the system 100 comprises means 15 for generating a first DC low voltage value, here 12 volts, from a current-voltage conversion of the leakage current relative to said coupling capacitor 10, first DC low voltage value being able to serve as power supply to at least one active electronic component of the electronic communication device, in particular here to the power amplifiers of the analog circuit 13 and to certain components of the radiofrequency or fiber communication module 14 optical.
- the generation means 15 comprise here a conversion unit comprising a capacitor 16 connected in series with the coupling capacitor 10, between the coupling capacitor and the primary of the isolation transformer 11, and a transforming means 17 receiving as input the voltage across said capacitor 16 and delivering the first value continuous low voltage.
- the transformation means generally raises the voltage across the capacitor 16 to obtain the first DC voltage value.
- the system 100 further comprises a DC voltage step-down means 18 receiving as input said first DC low voltage value and delivering a second DC low voltage value lower than the first DC voltage value, here 3, 3 Volts.
- the DC voltage step-down means 18 may or may not be integrated in the generation means 15.
- Means 19 for protecting against current overvoltages are advantageously provided between the coupling capacitor and the ground.
- the values of the coupling capacitor 10 and the additional capacitor 16 must be chosen to allow coupling while optimizing the bulk. A large coupling capacity allows better coupling, but at the expense of congestion. With the existing components to date, the tests of the Applicant have shown that the total value of the serial capacitors must not exceed 1.5 nanofarads to ensure the best compromise between a good coupling and a small footprint. In the example of FIG. 4, it is possible to choose a capacitor 16 with a value of 10 nanoFarads, so that the equivalent capacitance resulting from putting the coupling capacitor 10 and the capacitor 16 in series is equal to 1.30 nanofarads.
- a first step is to prevent the generation means from generating noise on the communication signal.
- an EMI filter is advantageously provided (no shown) against electromagnetic interference at the input of the transformation means 17.
- FIG. 5 illustrates a second possible embodiment of the power supply system 100.
- the generation means comprise an integer n greater than 1 of conversion units interconnected so that the capacitors 16 1 to 16 n of each conversion unit are connected in series with the coupling capacitor 8, each of said units delivering, at the output of its corresponding transformation means 17i ... 17 n , an nth of said first low-DC voltage value.
- the voltage of 12 volts will here be obtained between the 3 volts output of the first conversion unit 16i and the 0 volt output of the fourth conversion unit.
- Each conversion unit preferably further comprises an EMI filter (not shown).
- the choice of the number of conversion units results from a compromise between the number of components and the voltage stress on the components.
- the table below shows a comparison of the results obtained for a number of conversion units varying from 1 to 4:
- a current hitherto regarded as parasitic is reused to generate the DC low voltage values necessary for supplying the active components of any communication device coupled to the medium voltage line by the capacitive coupler PLC.
- the installations of the devices are therefore no longer limited to the only places where a low voltage / medium voltage transformer is present, and can be extended to the entire medium voltage network.
- FIG. 6 represents such an equipment 20 comprising an end 21 for the connection of a cable (not represented) to a medium voltage line of the distribution network, a first module 22 comprising the capacitive in-line power-line coupler and the means for generation of low voltage power supply, and a second module 23 corresponding to the electronic communication device, here a repeater.
- the equipment 20 thus constitutes a self-powered repeater, which can be installed at any medium voltage electrical pole of the distribution network.
- the invention has been described essentially in its application to a remote meter reading system, but can of course be applied for other purposes, for example in a monitoring system of the electrical distribution network including sensors and equipment transmitting the sensed data by power line.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Devices For Supply Of Signal Current (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1159458A FR2981806B1 (en) | 2011-10-19 | 2011-10-19 | LOW VOLTAGE CONTINUOUS POWER SUPPLY FOR COMMUNICATION ELECTRONIC DEVICES |
PCT/FR2012/052085 WO2013057399A2 (en) | 2011-10-19 | 2012-09-18 | Low dc voltage supply for electronic communication devices |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2769453A2 true EP2769453A2 (en) | 2014-08-27 |
EP2769453B1 EP2769453B1 (en) | 2017-11-08 |
Family
ID=47022990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12773056.2A Active EP2769453B1 (en) | 2011-10-19 | 2012-09-18 | Low dc voltage supply for electronic communication devices |
Country Status (5)
Country | Link |
---|---|
US (1) | US9735572B2 (en) |
EP (1) | EP2769453B1 (en) |
AU (1) | AU2012324711B2 (en) |
FR (1) | FR2981806B1 (en) |
WO (1) | WO2013057399A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102065665B1 (en) * | 2013-10-17 | 2020-01-13 | 삼성전자 주식회사 | Non-volatile memory device including dummy wordline, memory system and operating method thereof |
US10447959B2 (en) * | 2017-11-20 | 2019-10-15 | Waymo Llc | Power over data line (PODL) board design method to improve data channel performance |
US11996782B2 (en) * | 2020-08-17 | 2024-05-28 | Manvel Zakharian | Method of controlling power transmission to a load |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2313950A (en) * | 1942-04-04 | 1943-03-16 | Westinghouse Electric & Mfg Co | Potential device |
FR1092040A (en) * | 1953-01-27 | 1955-04-18 | Asea Ab | Capacitor Type Voltage Transformer |
US7007305B2 (en) * | 2001-09-06 | 2006-02-28 | Genlyte Thomas Group Llc | Repeater amplifier with signal firewall protection for power line carrier communication networks |
JP2006319449A (en) * | 2005-05-10 | 2006-11-24 | Kansai Electric Power Co Inc:The | Public wireless access system |
US8947258B2 (en) | 2008-08-08 | 2015-02-03 | Powermax Global Llc | Reliable, long-haul data communications over power lines for meter reading and other communications services |
-
2011
- 2011-10-19 FR FR1159458A patent/FR2981806B1/en not_active Expired - Fee Related
-
2012
- 2012-09-18 US US14/350,627 patent/US9735572B2/en not_active Expired - Fee Related
- 2012-09-18 EP EP12773056.2A patent/EP2769453B1/en active Active
- 2012-09-18 AU AU2012324711A patent/AU2012324711B2/en not_active Ceased
- 2012-09-18 WO PCT/FR2012/052085 patent/WO2013057399A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013057399A2 * |
Also Published As
Publication number | Publication date |
---|---|
FR2981806B1 (en) | 2015-03-13 |
EP2769453B1 (en) | 2017-11-08 |
AU2012324711A1 (en) | 2014-05-22 |
WO2013057399A3 (en) | 2013-10-24 |
WO2013057399A2 (en) | 2013-04-25 |
US9735572B2 (en) | 2017-08-15 |
FR2981806A1 (en) | 2013-04-26 |
AU2012324711B2 (en) | 2016-09-08 |
US20140300190A1 (en) | 2014-10-09 |
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